Opinion: This twisted measurement curiously begins its analysis 11 years ago during the economic fantasyland of 2007.

K-12 education in Arizona is missing a billion dollars. The phrase is repeated so frequently the media mimics it without understanding its meaning.

The trouble is, it’s rhetoric – not fact.

Total K-12 spending a decade ago was $9.7 billion for $9,263 per pupil. The estimate for today (not including the recently passed state budget) is $10.9 billion at $9,774 per pupil, according to the Joint Legislative Budget Committee.

Inflation claims are out of control

Advocates calculate the one billion figure with misleading math. They take total spending from fiscal 2008 and adjust every single fund source for inflation through today. Every fund!

This despite there being no voter requirement to inflate anything other than the equalization formula. This twisted measurement curiously begins its analysis 11 years ago during the economic fantasyland of 2007.

Plainly, there is no mechanism to inflate every fund that goes to K-12. Is the state Legislature responsible to inflate the more than one billion dollars the feds provide?

The money the state spends on new school construction is based on district growth, not an automatic adjustment for inflation. Bonds and overrides are local matters and depend on voter approval.

By that measure, more funding is a cut

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The voter-approved Proposition 301 six-tenths of a cent sales tax benefits various education programs. It is set to expire in 2021.

There are hundreds of millions in non-formula programs that are capped or otherwise limited. Measuring the state’s commitment to education in this manner is intentionally unreachable.

If Arizona is to grade itself this way, it must annually pay for population and inflation, plus a new amount on top of that to account for the billions which are not inflated. The Legislature recently added an additional $400 million to K-12 on top of inflation and population growth for fiscal 2019.

But if they do not further inflate the funds outside of their control, the budget will undoubtedly be called a “cut to K-12” in fiscal 2020 using this measurement.

K-12 was cut in 2008, for good reason

This isn’t to say K-12 wasn’t cut during the recession. Like the rest of government and ordinary Arizonans, everyone took a haircut. K-12 lost significant money in capital funding.

It’s easy to forget on a sunny day in 2018 that Arizona lost 40 percent of all state general fund revenues between 2008 and 2010. The Legislature ignored the advice of economists in 2007 and passed an unsustainable state budget for fiscal 2008 that was 60 percent larger than it was just five years earlier.

A fair way to measure the state’s K-12 appropriation would be to adjust the equalization formula by inflation and pupils. The equalization formula is the bedrock of the K-12 finance formula and is what the voters directed the Legislature to inflate. Adjusting for inflation and pupils, the equalization formula for next year will be roughly $160 million shy of what it was a decade ago.

Don't make every investment seem inadequate

Advocates have legitimate facts they can use; there’s no need for tortured analysis.

Measuring inputs to K-12 by adjusting every single line item for inflation is the ultimate carrot in front of the horse routine. Worse than misguided rhetoric, the billion-dollar claim is insulting to taxpayers because it ensures their investment will forever be described as inadequate.